The only thing I care about is a sleeker design. Something which I could believe a man actually doing agile physical activity in - fighting, climbing, running etc - The TDK suit was so clunky. Despite his reasoning, metaphorically and pragmatically, I never really bought into the necessity of Batman wearing what was quite literally armour.

Batman's intelligence, agility, speed and reliance of stealth methods of combat should counter his need to wear that heavy thing.